The operator of gas stations and convenience stores said net income rose to $15.9 million, or 32 cents per share, from $14 million, or 28 cents per share. Analysts surveyed by Thomson First Call had predicted slightly lower earnings of 31 cents per share.

Sales rose 20 percent to $733.9 million from $609.4 million a year ago. Gasoline revenue rose 13 percent to $480.5 million from $367 million. Gallons sold rose slightly overall, though on a same-store basis, gallons sold fell 1.4 percent.

"That's understandable, given the continuing high retail gasoline prices affecting demand,'' chairman and CEO Ronald M. Lamb said in a statement.

Company officials said adding more stores through acquisition is a priority and that Casey's has plans to buy at least 43 stores and build 15 new stores.